<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>

        .ht {
            text-align: center;
            color: cadetblue;
            font-family: 幼圆;
        }

        .tab {
            width: 500px;
            border: 5px solid cadetblue;
            margin: 0px auto;
            border-radius: 5px;
            font-family: 幼圆;
        }

        .ltr td {
            border: 1px solid powderblue;

        }

        .ipt {
            border: 0px;
            width: 50%;

        }

        .btn1 {
            border: 2px solid powderblue;
            border-radius: 4px;
            width: 60px;
            background-color: antiquewhite;

        }

        .msg {
            color: gold;
        }

        .buttonContainer {
            text-align: center;
        }
    </style>

    <script>


        // 校验用户名的方法
        function checkUsername() {
            // 定义正则
            var usernameReg = /^[a-zA-Z0-9]{5,10}$/
            var username = document.getElementById("usernameInput").value
            var usernameMsgSpan = document.getElementById("usernameMsg")
            if (!usernameReg.test(username)) {
                usernameMsgSpan.innerText = "不合法"
                return false
            }
            //格式正确 校验用户是否被占用
            var request = new XMLHttpRequest();
            console.log("发送请求")
            request.onreadystatechange = function () {
                if (request.readyState == 4 && request.status == 200) {
                    var parse = JSON.parse(request.responseText);
                    console.log(parse)
                    if (parse.code != 200) {
                        usernameMsgSpan.innerText = "不可用"
                        return false
                    }
                }
            }
            request.open("GET", "http://localhost:8080/user/checkUsername?username=" + username)
            request.send()

            usernameMsgSpan.innerText = "OK"
            return true
        }


        // 校验密码的方法
        function checkUserPwd() {
            // 定义正则
            var passwordReg = /^[0-9]{6}$/
            var userPwd = document.getElementById("userPwdInput").value
            var userPwdMsgSpan = document.getElementById("userPwdMsg")
            if (!passwordReg.test(userPwd)) {
                userPwdMsgSpan.innerText = "不合法"
                return false
            }
            userPwdMsgSpan.innerText = "OK"
            return true
        }

        // 校验密码的方法
        function checkReUserPwd() {
            // 定义正则
            var passwordReg = /^[0-9]{6}$/
            var userPwd = document.getElementById("userPwdInput").value
            var reUserPwd = document.getElementById("reUserPwdInput").value
            var reUserPwdMsgSpan = document.getElementById("reUserPwdMsg")
            if (!passwordReg.test(userPwd)) {
                reUserPwdMsgSpan.innerText = "不合法"
                return false
            }
            if (userPwd != reUserPwd) {
                reUserPwdMsgSpan.innerText = "不一致"
                return false

            }
            reUserPwdMsgSpan.innerText = "OK"
            return true
        }

        //表单提交时统一校验
        function checkForm() {
            return checkUsername() && checkUserPwd() && checkReUserPwd()
        }


    </script>
</head>
<body>
<h1 class="ht">欢迎使用日程管理系统</h1>
<h3 class="ht">请注册</h3>
<form method="post" action="/user/regist" onsubmit="return checkForm()">
    <table class="tab" cellspacing="0px">
        <tr class="ltr">
            <td>请输入账号</td>
            <td>
                <input class="ipt" id="usernameInput" type="text" name="username" onblur="checkUsername()">
                <span id="usernameMsg" class="msg"></span>
            </td>
        </tr>
        <tr class="ltr">
            <td>请输入密码</td>
            <td>
                <input class="ipt" id="userPwdInput" type="password" name="userPwd" onblur="checkUserPwd()">
                <span id="userPwdMsg" class="msg"></span>
            </td>
        </tr>
        <tr class="ltr">
            <td>确认密码</td>
            <td>
                <input class="ipt" id="reUserPwdInput" type="password" onblur="checkReUserPwd()">
                <span id="reUserPwdMsg" class="msg"></span>
            </td>
        </tr>
        <tr class="ltr">
            <td colspan="2" class="buttonContainer">
                <input class="btn1" type="submit" value="注册">
                <input class="btn1" type="reset" value="重置">
                <button class="btn1"><a href="/login.html">去登录</a></button>
            </td>
        </tr>
    </table>

</form>


</body>
</html>